20 Great Ashby Way, Stevenage, SG1 6AW
About 20 Great Ashby Way
20 Great Ashby Way is a five-bedroom detached house in Stevenage (SG1 6AW). It has a recorded floor area of 172 m² (around 1851 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (April 2025) shows a C (score 74). The rating has held steady at C across 2 certificates since January 2009. Between certificates, lighting went from Average to Very Good. The recommended improvements would push it to B (score 82). Other recorded features include a balcony.
It hasn't traded since July 2010, a hold of 16 years that's notably long for the area. At 172 m² the property is well over the postcode median (83 m² across 24 EPCs), placing it in the larger end of the local stock. Across 2000–2010, sale prices on this property compounded at 2.4% per year. Today's modelled estimate of £655,000 sits 138.2% above the 2010 sale of £275,000. On a £-per-square-foot basis, the last sale (£149/sq ft) was about 27.1% below the postcode norm. One planning record on file: a garage conversion approved in 2021. Past consents include a garage conversion, meaningful when judging how the property has evolved.
Know exactly what you're buying at 20 Great Ashby Way
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms5
- Bathrooms3
- Open-plan layoutYes
- Dining roomYes
- Utility roomYes
- EnsuiteYes
- StudyYes
Outside
- Private gardenYes
- GarageYes
- BalconyYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
- Oct 2021Garage ConversionOutlineIn report
Replace exising attached front elevation garage door with a window to facilitate conversion of garage into habitable accommodation
- Agent
- Geoffrey Phillips
- Documents
- 5 docs on file
- Reference
- 21/02493/LDCP
What's in 20 Great Ashby Way, Stevenage, SG1 6AW's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
20 Great Ashby Way's estimated value is more than triple its earliest registered sale price (2000).
£655,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.4% per year over 10 years.
£275,000
Growth on file: 2.4% per year over 10 years.
Sales timeline
1 July 2010Most recent
£275,000
+32.2%over 8 years10 December 2001
£208,000
-3.3%over 1 year24 March 2000
£215,000
Median price across the last 5 sales in SG1 6AW: £415,000 (2025–2020).
Nearby sales in SG1 6AW
Everything we know about 20 Great Ashby Way, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Great Ashby Way homes
Floor Area for 20 Great Ashby Way runs comfortably ahead of the street norm.
Price per m²
£1,599
Street avg £3,282
Floor Area
172 m²
Street avg 91 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
4.7 t/year
Street avg 3.4 t/year
Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
20/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Serpentine Close — bus stop.
Closest school
0.6 km
Round Diamond Primary School. 16 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
46.5dB

Night-time· 23:00 – 07:00
36.9dB